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HE WAS BUSY _______ HIS HOMEWORK. A. DOING B. TO D...
HE WAS BUSY _______ HIS HOMEWORK. A. DOING B. TO DO C. THAT HE WAS...
BAI TAP TRAC NGHIEM TONG HOP01
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Đáp án tham khảo
34. He was busy _______ his homework.
A. doing
B. to do C. that he was doing D. he was doing
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34.
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BAI TAP TRAC NGHIEM TONG HOP01